mccain tweeted: "so ahmadinejad wants to be first iranian in space - wasn't he just there last week?" >> pam: the post included a link to an article from last week on iran's attempt to launch a monkey into space. after catching some backlash, mccain tweeted another message: "lighten up folks, can't everyone take a joke?" >> pam: developing right now -- police trying to figure out why a man at a texas gun range shot and killed two men. one of the victims was a navy seal. -- at this hour a suspect is behind bars. former navy seal chris kyle known for his record number of kills as a sniper. and fellow veteran chad littlefield were shot and killed saturday at a gun range on the rough creek lodge and resort in glen rose, texas. investigators say a hunting guide found their bodies. police say this man. eddie ray routh. took kyle's pickup truck and drove to his sister's house. it was there, they say, routh admitted to his sister that he shot kyle and littlefield. routh's sister called police. a neighbor describes the scene. >> they had like four shotguns on him, i believe. it's dark out here